{
  "title": "Watermark image",
  "human_url": "https://happytails.ai/en/image-tools/watermark-image/",
  "agent_url": "https://happytails.ai/agents/en/image-tools/watermark-image/",
  "language": "en",
  "markdown_url": "https://happytails.ai/en/image-tools/watermark-image.md",
  "content": "Watermark image\nAdd a text watermark to your image.\nUseful next steps\nAVIF to JPG\nConvert a AVIF image to JPG in your browser.\nAVIF to PNG\nConvert a AVIF image to PNG in your browser.\nWEBP to PNG\nConvert a WEBP image to PNG in your browser.\nHow to use Watermark image\nChoose a file in an image format your browser can open.\nReview the settings, then choose Run Watermark image.\nReview the result, then use Copy result or a download link when available.\nWhat to expect\nAdd a text watermark to your image. Enter your watermark text and review its placement in the preview before downloading.",
  "content_format": "text/plain",
  "visibility": "public",
  "links": [
    {
      "name": "AVIF to JPG Convert a AVIF image to JPG in your browser.",
      "url": "https://happytails.ai/en/image-tools/avif-to-jpg/"
    },
    {
      "name": "AVIF to PNG Convert a AVIF image to PNG in your browser.",
      "url": "https://happytails.ai/en/image-tools/avif-to-png/"
    },
    {
      "name": "WEBP to PNG Convert a WEBP image to PNG in your browser.",
      "url": "https://happytails.ai/en/image-tools/webp-to-png/"
    }
  ],
  "tool": {
    "id": "watermark-image",
    "category": "image-tools",
    "built": true,
    "requirements": "Text/image watermark, opacity, placement and batch preview; keep original.",
    "implementation": {
      "fields": [
        {
          "key": "caption",
          "label": "Caption / watermark",
          "value": "Happytails.ai",
          "type": "text"
        },
        {
          "key": "fontSize",
          "label": "Font size",
          "value": 36,
          "type": "number"
        },
        {
          "key": "color",
          "label": "Text color",
          "value": "#ffffff",
          "type": "color"
        },
        {
          "key": "opacity",
          "label": "Watermark opacity (0–1)",
          "value": 0.6,
          "type": "number"
        }
      ],
      "files": true,
      "accept": "image/*,.svg,.avif",
      "input": false,
      "note": "Runs in your browser. Animated inputs produce a single still image. Supported decoding depends on your browser.",
      "experience": {
        "automatic": false,
        "single": false,
        "label": "Your text",
        "placeholder": "Type or paste your input…",
        "help": "Up to 1,000,000 characters. Review the settings before running.",
        "action": null
      },
      "mode": "explicit",
      "interactive": false
    },
    "execution": "Browser interface",
    "api": null,
    "browser_agent": {
      "supported": true,
      "name": "run_current_tool",
      "discovery": "WebMCP on the human page in a supporting browser",
      "verification": "See audit/API-AUDIT.md; availability is not verification"
    }
  },
  "markdown": "# Watermark image\n\n- Human page: https://happytails.ai/en/image-tools/watermark-image/\n- Markdown: https://happytails.ai/en/image-tools/watermark-image.md\n- Structured JSON: https://happytails.ai/agents/en/image-tools/watermark-image/index.json\n- Visibility: public\n\n## Tool capabilities\n\n| Property | Value |\n| --- | --- |\n| Tool ID | `watermark-image` |\n| Category | image-tools |\n| Implementation | Registered implementation. Registration alone is not a production-quality guarantee. |\n| Browser execution | Use the visible action or interactive controls. |\n| Browser processing | Browser; see tool notes for network behavior. |\n| HTTP API | Not callable through HTTP. |\n| Browser-agent interface | run_current_tool |\n\n### Implementation notes\n\nRuns in your browser. Animated inputs produce a single still image. Supported decoding depends on your browser.\n\n### Inputs and settings\n\nNo free-text input is required. Use the file inputs and/or settings below.\n\nAccepted browser files: `image/*,.svg,.avif`. Choose one file.\n\n| Setting | Meaning | Control type | Default | Constraints |\n| --- | --- | --- | --- | --- |\n| `caption` | Caption / watermark | text | \"Happytails.ai\" |  |\n| `fontSize` | Font size | number | 36 |  |\n| `color` | Text color | color | \"#ffffff\" |  |\n| `opacity` | Watermark opacity (0–1) | number | 0.6 |  |\n\n### Browser-agent workflow\n\n1. Open the human page in a browser that supports WebMCP.\n2. Discover the interface exposed by that page; use its actual schema.\n3. Select files on the page first when the tool requires files.\n4. Call `run_current_tool` with valid input and settings.\n5. Inspect the returned result or error and the displayed output. Retrieve files from the displayed download links.\n\nCalls do not automatically copy or download results. Browser permissions still apply. Interface availability alone is not proof of successful execution.\n\n### Planning specification\n\nText/image watermark, opacity, placement and batch preview; keep original.\n\nThis describes intended requirements. Use the implementation notes, interface schema and observed output to determine current support.\n\n### Complete machine-readable capability record\n\n```json\n{\n  \"id\": \"watermark-image\",\n  \"category\": \"image-tools\",\n  \"built\": true,\n  \"requirements\": \"Text/image watermark, opacity, placement and batch preview; keep original.\",\n  \"implementation\": {\n    \"fields\": [\n      {\n        \"key\": \"caption\",\n        \"label\": \"Caption / watermark\",\n        \"value\": \"Happytails.ai\",\n        \"type\": \"text\"\n      },\n      {\n        \"key\": \"fontSize\",\n        \"label\": \"Font size\",\n        \"value\": 36,\n        \"type\": \"number\"\n      },\n      {\n        \"key\": \"color\",\n        \"label\": \"Text color\",\n        \"value\": \"#ffffff\",\n        \"type\": \"color\"\n      },\n      {\n        \"key\": \"opacity\",\n        \"label\": \"Watermark opacity (0–1)\",\n        \"value\": 0.6,\n        \"type\": \"number\"\n      }\n    ],\n    \"files\": true,\n    \"accept\": \"image/*,.svg,.avif\",\n    \"input\": false,\n    \"note\": \"Runs in your browser. Animated inputs produce a single still image. Supported decoding depends on your browser.\",\n    \"experience\": {\n      \"automatic\": false,\n      \"single\": false,\n      \"label\": \"Your text\",\n      \"placeholder\": \"Type or paste your input…\",\n      \"help\": \"Up to 1,000,000 characters. Review the settings before running.\",\n      \"action\": null\n    },\n    \"mode\": \"explicit\",\n    \"interactive\": false\n  },\n  \"execution\": \"Browser interface\",\n  \"api\": null,\n  \"browser_agent\": {\n    \"supported\": true,\n    \"name\": \"run_current_tool\",\n    \"discovery\": \"WebMCP on the human page in a supporting browser\",\n    \"verification\": \"See audit/API-AUDIT.md; availability is not verification\"\n  }\n}\n```\n\n## Page guide\n\nAdd a text watermark to your image.\n\n## Useful next steps\n\n- [AVIF to JPG](https://happytails.ai/en/image-tools/avif-to-jpg/): Convert a AVIF image to JPG in your browser. ([Markdown](https://happytails.ai/en/image-tools/avif-to-jpg.md))\n\n- [AVIF to PNG](https://happytails.ai/en/image-tools/avif-to-png/): Convert a AVIF image to PNG in your browser. ([Markdown](https://happytails.ai/en/image-tools/avif-to-png.md))\n\n- [WEBP to PNG](https://happytails.ai/en/image-tools/webp-to-png/): Convert a WEBP image to PNG in your browser. ([Markdown](https://happytails.ai/en/image-tools/webp-to-png.md))\n\n## How to use Watermark image\n\n1. Choose a file in an image format your browser can open.\n2. Review the settings, then choose Run Watermark image.\n3. Review the result, then use Copy result or a download link when available.\n\n## What to expect\n\nAdd a text watermark to your image. Enter your watermark text and review its placement in the preview before downloading.\n"
}